Vintage polished ammonite fossil specimen from The Nature Company in original display box with informational insert cards included.
This specimen appears to be a genuine Moroccan ammonite fossil that has been cut and polished to reveal the internal chamber structure. Based on the fossil morphology and shell structure, it is likely Jurassic in age and approximately 150 million years old.
Mislabeled:
The included label identifies the fossil as “Schloenbachia,” though this attribution may be commercially generalized or inaccurate. After closer examination, the fossil appears more consistent with a smooth Jurassic ammonite or phylloceratid-type ammonite rather than a classic Cretaceous Schloenbachia specimen.
Features:
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Original Nature Company box
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Polished display surface showing internal chambers
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Natural unpolished reverse side
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Spiral ammonite shell structure
- Genuine Moroccan Jurassic ammonite fossil
- Great display piece for fossil, geology, or natural history collectors
Condition:
Good vintage condition with light wear from age and display. Box and inserts show minor handling/storage wear. Fossil has natural imperfections and preparation marks consistent with commercially polished Moroccan ammonites.
Approximate age:
150 million years old (approx.)
What the fossil morphology suggests:
This specimen has:
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strongly involute coiling (outer whorl envelops inner whorls),
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relatively smooth flanks,
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broad rounded whorl section,
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weak ornamentation,
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no obvious tubercles/spines,
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fairly compressed inner chambers.
Those traits are much more consistent with smoother Jurassic ammonites than with heavily ornamented mid-Cretaceous forms.
Most plausible Jurassic group:
Phylloceratina-type ammonite (strong possibility)
These are smooth, tightly coiled Jurassic ammonites commonly found in Moroccan material.
Typical traits:
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smooth shell,
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elegant rounded whorls,
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little ribbing,
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involute coil.
This fossil resembles these more than spiny or ribbed perisphinctids.
Possible affinities:
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Phylloceras
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Calliphylloceras
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related phylloceratids.
What argues against Cretaceous identification
Most common Moroccan Cretaceous ammonites sold commercially tend to show:
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stronger ribbing,
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tubercles,
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more angular whorls,
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or more ornate sutures.
This fossil looks comparatively conservative and Jurassic in character.
Best current assessment
Most likely:
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Genuine Moroccan Jurassic ammonite
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Probably Kimmeridgian age
Estimated age:
152–157 million years old
Possible affinities:
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phylloceratid ammonite,
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possibly Phylloceras-type lineage,
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less likely true Schloenbachia.
So ironically:
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the “150 million years old” part may be approximately right,
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while the genus label is probably wrong or simplified.
Ref: jurassic ammonite fossil